Old High German tunkal

← Proto-Germanic *dunkwaz (inherited)

← Proto-Germanic *dunkalaz (mention)

← Proto-Germanic *dunkaraz (mention)

← Dutch donker (mention)

← Old Norse dökkr (mention)

→ German dunkel (inherited)

→ Old High German tunkali (suffix)

→ Luxembourgish donkel (inherited)

→ Old Norse døkkr (cognate)

→ Yiddish טונקל (inherited)